Home / 13,810.78-20,703.75-5,039.56

Finding the Fourth Proportional to 13,810.78, 20,703.75 and 5,039.56

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Solution

The fourth proportional to 13,810.78, 20,703.75 and 5,039.56 is: 7,554.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,810.78 : 20,703.75 = 5,039.56 : x
  2. Step 2: Convert to fraction form
    13,810.78/20,703.75 = 5,039.56/x
  3. Step 3: Cross multiply
    13,810.78x = 20,703.75 × 5,039.56
  4. Step 4: Simplify right side
    13,810.78x = 104,337,790.35
  5. Step 5: Solve for x
    x = 104,337,790.35/13,810.78
  6. Step 6: Final answer
    x = 7,554.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.